I have signed up with a hosting company for a windows package. The package came with plesk 8.6.

Now, I need to give the developer an access to upload and configure the site. The only username and password I have is the one that I use to access the whole account including credit card data.

Is there a way, that I can create an account from Plesk for the developer to access the webhoting account without seeing my credit card data?

Thank you

There are different type of users can be created in Parallels Plesk. I can suggest you to check appropriate documentation for this case:

http://download1.swsoft.com/Plesk/Plesk8.6/Doc/en-US/plesk-8.6-win-administrators-guide/24856.htm

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Plesk users hierarchy is limited to three user levels: client accounts, domain administrator accounts, and e-mail user accounts. All these types of users can have access to control panel for managing their own web sites and e-mail accounts.

For users who need to resell hosting services or host numerous domains/web sites, you should create client accounts. And then, your resellers can create domain administrator accounts for their own customers. A domain administrator's account can be created only after the user's site is hosted on the server. A domain administrator account is limited to having only one site, however, a domain administrator can provide other users with mail hosting services under his or her domain. For that purpose, e-mail user accounts are created and granted access to control panel.
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So in your case you can provide only domain administrator access for developer so he could manage website and not see any other data which is not related to domain itself.

I have signed up with a hosting company for a windows package. The package came with plesk 8.6.

Now, I need to give the developer an access to upload and configure the site. The only username and password I have is the one that I use to access the whole account including credit card data.

Is there a way, that I can create an account from Plesk for the developer to access the webhoting account without seeing my credit card data?

Thank you

The Plesk control panel doesn't have any credit card information. When you say "The whole account" do you mean your billing panel? Inside plesk you could create a "Web User" which would allow your developer to work inside a subfolder inside your root web and preview it via yourdomain.com/~user